Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual cidade tem um jogo amigável e um oponente da Tunísia?
 ###Tabelas: CREATE TABLE largest_cities (largest_cities_id AUTO_INCREMENT PRIMARY KEY, City proper VARCHAR, Population City limits in millions INT, Density per km² INT, Urban area VARCHAR, Population Urban area in millions INT, Metro area VARCHAR, Population Metro area in millions VARCHAR) CREATE TABLE regular_season_and_post-season_games (regular_season_and_post-season_games_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Kicker VARCHAR, Kicking team VARCHAR, Opponent VARCHAR, Yards INT, Result VARCHAR, Game time VARCHAR) CREATE TABLE composition_of_the_7th_seanad (composition_of_the_7th_seanad_id AUTO_INCREMENT PRIMARY KEY, Administrative Panel INT, Agricultural Panel INT, Cultural and Educational Panel INT, Industrial and Commercial Panel INT, Labour Panel INT, National University of Ireland INT, University of Dublin INT, Nominated by the Taoiseach INT, Total INT) CREATE TABLE 1973 (1973_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, City VARCHAR, Opponent VARCHAR, Results¹ VARCHAR, Type of game VARCHAR) CREATE TABLE ranking_event_finals:_8_4_titles_4_runner-ups (ranking_event_finals:_8_4_titles_4_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Opponent in the final VARCHAR, Score VARCHAR)  
SELECT City FROM 1973 WHERE Type of game = friendly AND Opponent = tunisia